Article in volume
Differential
Inclusions, Control and Optimization 20 (2000) 209-244
DOI: https://doi.org/10.7151/dmdico.1013
GENERALIZED NEWTON AND NCP- METHODS: CONVERGENCE, REGULARITY, ACTIONS
Bernd Kummer
Humboldt-Universität zu Berlin
Mathematisch-Naturwissenschaftliche Fakultät II
Institut für Mathematik
e-mail: kummer@mathematik.hu-berlin.de
Abstract
Solutions of several problems can be modelled as solutions of nonsmooth equations. Then, Newton-type methods for solving such equations induce particular iteration steps (actions) and regularity requirements in the original problems. We study these actions and requirements for nonlinear complementarity problems (NCP's) and Karush-Kuhn-Tucker systems (KKT) of optimization models. We demonstrate their dependence on the applied Newton techniques and the corresponding reformulations. In this way, connections to SQP-methods, to penalty-barrier methods and to general properties of so-called NCP-functions are shown. Moreover, direct comparisons of the hypotheses and actions in terms of the original problems become possible. Besides, we point out the possibilities and bounds of such methods in dependence of smoothness.
Keywords: nonsmooth functions, generalized Newton methods, critical points, complementarity, SQP methods, inverse mappings, regularity.
1991 Mathematics Subject Classification: 90C31, 90C48, 70H30.
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Received 20 December 1999
Revised 19 May 2000
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